<s>
EPON	B-Protocol
Protocol	I-Protocol
over	I-Protocol
Coax	I-Protocol
,	O
or	O
EPoC	O
,	O
refers	O
to	O
the	O
transparent	O
extension	O
of	O
an	O
Ethernet	O
passive	O
optical	O
network	O
(	O
EPON	O
)	O
over	O
a	O
cable	O
operator	O
's	O
hybrid	B-Architecture
fiber-coax	I-Architecture
(	O
HFC	O
)	O
network	O
.	O
</s>
<s>
From	O
the	O
service	O
provider	O
's	O
perspective	O
the	O
use	O
of	O
the	O
coax	O
portion	O
of	O
the	O
network	O
is	O
transparent	O
to	O
EPON	O
protocol	O
operation	O
in	O
the	O
optical	B-Protocol
line	I-Protocol
terminal	I-Protocol
(	O
OLT	O
)	O
thereby	O
creating	O
a	O
unified	O
scheduling	O
,	O
management	O
,	O
and	O
quality	O
of	O
service	O
(	O
QoS	O
)	O
environment	O
that	O
includes	O
both	O
the	O
optical	O
and	O
coax	O
portions	O
of	O
the	O
network	O
.	O
</s>
<s>
EPoC	O
adds	O
to	O
the	O
family	O
of	O
IEEE	O
802.3	O
Ethernet	B-Protocol
in	I-Protocol
the	I-Protocol
First	I-Protocol
Mile	I-Protocol
(	O
EFM	O
)	O
standards	O
.	O
</s>
<s>
The	O
Institute	O
of	O
Electrical	O
and	O
Electronics	O
Engineers	O
(	O
IEEE	O
)	O
802.3	O
standards	O
committee	O
published	O
standards	O
for	O
a	O
symmetric	O
1Gbit/s	O
EPON	O
network	O
,	O
originally	O
published	O
in	O
September	O
2004	O
as	O
IEEE	O
802.3ah-2004	O
,	O
and	O
a	O
10Gbit/s	O
EPON	O
network	O
permitting	O
symmetric	O
10Gbit/s	O
and	O
asymmetric	O
10Gbit/s	O
downstream	O
1Gbit/s	O
upstream	O
,	O
originally	O
published	O
in	O
June	O
2009	O
as	O
IEEE	B-Protocol
802.3av-2009	I-Protocol
also	O
known	O
as	O
10G-EPON	B-Protocol
.	O
</s>
<s>
IEEE	O
802.3	O
standards	O
apply	O
to	O
Media	B-Protocol
Access	I-Protocol
Control	I-Protocol
(	O
MAC	O
)	O
sublayer	O
and	O
Physical	O
sublayer	O
specifications	O
,	O
and	O
their	O
respective	O
management	O
,	O
only	O
.	O
</s>
<s>
For	O
EPON	O
,	O
IEEE	O
802.3	O
defined	O
separately	O
a	O
service	O
provider	O
MAC	O
and	O
PHY	O
called	O
an	O
Optical	B-Protocol
Line	I-Protocol
Terminal	I-Protocol
(	O
OLT	O
)	O
and	O
a	O
subscriber	O
MAC	O
and	O
Physical	O
sublayer	O
called	O
an	O
Optical	O
Network	O
Unit	O
(	O
ONU	O
)	O
.	O
</s>
<s>
The	O
intent	O
is	O
the	O
CLT	O
MAC	B-Protocol
sublayer	I-Protocol
is	O
the	O
same	O
as	O
the	O
OLT	O
MAC	B-Protocol
sublayer	I-Protocol
and	O
the	O
CNU	O
MAC	B-Protocol
sublayer	I-Protocol
is	O
the	O
same	O
as	O
the	O
ONU	O
MAC	B-Protocol
sublayer	I-Protocol
.	O
</s>
<s>
In	O
the	O
case	O
of	O
a	O
coax	O
network	O
,	O
the	O
Medium	B-Protocol
Dependent	I-Protocol
Interface	I-Protocol
(	O
MDI	O
)	O
is	O
typically	O
the	O
industry	O
standard	O
"	O
F	O
"	O
connector	O
.	O
</s>
